Paper-feed mechanism.



l H. C. GAMMETBR. vPAPER I 'EBD MEGHANISM. APPLIOATION FILED 00T.9,1907.

`Patented Apr. 18, 1911.

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"UNTTED STATES PATENT onirica.

HARRY C. GAMMETER, 0F CLEVELAND, OHIO, ASSIGNOR TO THE AMERICAN MULTI-GRAPH COMPANY, OF CLEVELAND, OHIO, A CORPORATION vOIF OHIO.

Specification of Letters Patent.

)ateutcd Apr.`18, 1911.1

Original application filed October 22, 1906, Serial No. 339,909. Dividedand this application filed October 9, 1907. Serial No. 396,571.

To all whom t may concern.'

Be it known that I, HARRY C. GAMMETER, a citizen of the United States,residing at Cleveland, inv the county of Cuyahoga and State of Ohio,have invented a certain new and useful Improvement in Paper-FeedMechanism, of which the `following is a full, clear, and exactdescription, reference being had to the accompanying drawings.

This invention relates to mechanism for feeding paper to printingpresses, and pai-,

` ment herein shown.

Theinvention includes not only the arrangement of feed-controlling'cams, but the simple and efficient `lock therefor, as hereinafter morefully explained.

The invention may thus be most conven' iently summarized as comprisingthe combinati of parts described and set outas to their essentialelements in the claims.-

In the drawings, Figure 1 is a 4vertical sec# tion through a multigraphembodying this invention. Fig. 2 is a side elevation of the left handportion of such multigraph. Fig. 3 is an enlarged sectional elevation ina plane parallel with Fig. 1 and nearer the left hand end of the machineand looking from that end. Fig. 4 is a perspective view of the lockingblock, F1 5 a cross section through such block an through the .cam

rings, this section being taken in aradial plane, as indicated by theline 5-5 in Fig. 1.4

Fig. 6 is a section through the locking block in a plane parallelwithFig. 1.

The multigraph shown in the drawings comprises the frame A carryingtherotary drum B` and the under-runnin carry ylongitudinal `rows ofinedividualjtype,

not shown. Mounted .in a-recess in the drum impression platenl). `.Theframe and platen are geared together by gearsb Land d on these twomembers respectively.` ,Theframe is adapted to` crank `C furnishesnic-.ms for driving thedrum and platen.

To properly feed the paper -to the drum v and platen, I may provide thefeeding rollers and 'paper stops which are shown and claimed in myPatent No. 846,992, issued March 12, 1907. Such is the mechanism hereinshown, which consists of a continuous under-running feed roller l",gearedwith the platen, and a superimposed feed. roller G carried bypivoted arms, H and adapted to be held out of engagement with the rollerF by means of a cam on the drum which cngages'a roller J on one of thearms I-I. A spring K tends to keep the two rollers in engagement.engagement, as shown in Fig. Lsuitable stop lVhen the rollers are out ofi fingers L mounted on the rock shaft N are projected into the path ofthe paper, forming stops for it. allows -the roller G to descend, an armIL on one of the arms H engages au arm L .on.

Vhen, however, the cam p the rock shaft N and'jthereby swings thefingers down out of the way, against the action of the spring M. j In mypatent referredy to there is a Single cam carried bythe drum coperatingwith the roller J land controlling the feed. Such cam may be adjusted todeter- `mine the time when the feed rollers go into engagement, suchaction taking place when the cam clearsl the roller JV "With suchmechanism, however, the feed rollers are always in action for a definitetime. j

The 'present invention is designed toicontrol both the time of thebeginning of the feed and its duration and to this end I mount two camson the drum, side by side, either of which cams may act on the roller Jso that the duration of the engagement may be varied. This constructionwill now be dcscribed.

On the surface of the drum adjacent to the gear Z) is a curvedcylindrical surface surrounded by two rings P andP'. rings have formedon them corresponding cam projections p ,which are adapted to operatcIthe roller J as stated. 'lhese cams are ,of the same extent, so `thatwhen they are side by sidethe engagementof the roller is simplythatequal to the length of. one roj ection `79, whereas, when the rings areshi ted,

These the effective engagement is increased up to a maximum of twice thelength of one of a cam j). The cam ring P is preferably rigidly held onthe drum and the shifting is accomplished by movingthe ring Pindependently. To enable such movement to be conveniently made with a.suitable tool, as

a screw driver, I form a notch p in theside of this ring P, by which itmay be ,engaged and shifted. l'

To conveniently lock the shiftable cam ring inany position, as well asto hold'the stationary ring against any shifting, I pro vide thefollowing'mechanism. vMounted in a rectangular recess b in the endmember of thewdrum is a block R which stands beneath Ithe-two cam rings.This'block is formed as shown in Fig. et, having a projection 1' onsubstantially half its upper surr face. This projection occupies a,notch in the cam ring P, as shown in F1 surface of thebloclrbeneath thering P is concentric with the surface on which the ring rides, sothatthat ring may be easily shifted. Lyingon the outer face of the blockand Aalso projecting beneath it into the recess b is an L-shaped `plateQ. This plate may be, clamped against the block by a set screw Sscrewing into the block. Such.

bottom portion of the plate Q is slightly greater than the height' ofthe projection r. The result of this is that when the set screw is outandthe plate` removed, the block R drops'inwardly radially to the baseof the recess b,..and this lowers the projection r so that it' clearsthe ring" Pandthe block may bedrawnoutof the recess laterally.Conversely, in installing the parts, it isonly necessary to insert theblock R into therecess, elevate this block into position, insertl thelower portion ofthe plate Q beneath the block and turn -tlie set screwinto position. The construction is thus extremel simple, while. it has.been4v found-'very e practice. l

Themechanismconstituting the subject of this invention is showninconnection with other features of ther-multi aphin my ap;` plicationNo. 839,909,-filed of which the present application is a division.

I claim: 1. In a printing mechanism, the combination of a printingmember, an impression platen coperating therewith, a gear on thelmember-*having a recess, a platen coperat- -lng therewith, a paperfeeding mechanism frs. 5 and 6,v thereby preventing such ring shifting.The.

Whenever j ective in.

'means for clampingithe othe'rfring.y I

atomes, 190e, y

' printing member meshing with a gear connected with the platen, a paperfeeding de vice adapted to feed paper to the-printing couple thusconstituted, and overlapping cam` rings mounted side by side on the periphery of the printing member between the gear thereon, and theprinting surface and adapted to adjustably control the paper feed.

2. The combination of a rotary print-ing therefor, a pair of cam ringscarried on the periphery of the printing member side by side, andadjustable the one along the other 80 to vary the effective length ofthe cam, and means accessible in suchv recess to loclr the cam.

3. The combination of a printing member, a platen, a paper feedingmechanism, an ad-v justabley cam, for controlling the paper feed andcomprising two cam rings side by side, one of which may be shifted withreference to the other to vary the'effective cam length,

and a block and set screwlfor locking the shiftable c'am ring.

4. The combination of a printing member, a platen, a paperfeeding'mechanism', an adjustable camA carried by the printing memberand comprising two cam members side 95 by side, one of which may beshifted with, reference to the other to vary the effective. cam length,and a block set into arecess in the 'printing member y and providedwith' means for lockingthe shiftable cam member.

5. The combinationof a rotary printing drum, a rotary platen, a i aperfeeding .mechanism, two cam rings .si e by Aside, surrounding the drumand one adapted to be shifted with reference to the other to lvary theeffective cam length,` andj a block set into a recess in the. printlndrum and provided with a screw for locking the shiftable cam y l ring. I

6. The combination with a printing drum of two rings side by sidethereon, one of which may be shifted with reference tothe other, and avclamping block and screw for the shiftable ring, having a projectionengaging in a notch inthe other ring.

7. The combination with a printing drum y oftwo rings side by sidethereon, :one of which maybe shifted with referenceto the other, a blocksetv intoa recess inzthe r'ingcarrying member and having .afprojectiomengagingina notchin-one ofthe rings,gan l y 8. `The combination with arintingd'rum of two-rings .sidefby sideit ereon'one'ofl'- which may be-shifted with referencef to thoi other, a block set into a recess in theringcarrying member and having a projection engaging in a notch in oneof the rings and a set-screw screwing into said block for clamp ing theother ring.

' the other,

. in a notch in'one -v against thering I .not occupy, said set screwengaging said I. drum, of a pair of cam-rings peazo? The combination lofa rotary printing drum, two rings side by Aside thereon, one of whichmay be shifted with reference to the other, a block set into a'recess inthe drum and having a projection engaging in a notch in one of into saidring. l v l 10. The combination with a printing drum of two ri-ngs sidebyI side thereon, one of which may` be shifted Awith reterence to ablockset into a recess beneath and having a' projectionengaging screwinginto said block, and a plate onthe outer side of said block adapted tobear which the projection does the rings and a set screw screwing blockfor clamping the shiftable the rings plate. A

11.. The combination with a printing member, 'of a pair of rings mountedthereon, a

recess in the member beneath the rings, a block occupying such` recessand having a projection adapted to occupy a notch in the innermost ring,said recess being deep -enough to allow the block to descend to allow Ys'uch projection to timing, and means for ass beneath the other gllingthe space beneath the block to hold its projection in engagement withthe corresponding ring.

12. The combination with a printing mounted therevon, a recess in thedrum within the rings, a block occupying such recess and having arojection adapted to occupy a notch in the arther ring, said recessbeing deep enough to a1low the block to descend to allow such l beneaththe block and lies yand means for filling the space projection to passbeneath the other ring,

beneath the block to hold vits projectionin engagement with thecorrespondin comprising a plate which enters the space along the outsideof the block. 13. The ber', of a pair of rings mounted thereon, a recess1n the member beneath the rings,.a

block occupying such recess and having a rojection adaptedto occupy anotch'in the arther ring, said recessbeing dee enough to allow the blockto descend to a ow vsuch projection to pass beneath the first ring, a

late which enters the space beneath the blockand lies along the outsideof the block and adjacent ring, and a set screw screwing throughthe'outer portion of said plate into the block. l

- 14. The combination of a printing drum. an impression platen, a pairof paper fee Y,engaging one cam, an

the rings, av set screw f ingthe drum at one end,

ring, said means l combination-with a printing memrollers, arms forholding one' of said rollers out of contact with ried by one of saidarms, cams relatively adjustable and carried by said drum and adapted toengage said last mentioned roller to govern engagement of the feedrollers, and a block set into the drum and a set screw for locking saidcams.

15. The combination of a type carrying member having a recess, a pair ofoverlapping cams, a block occu ying said recess and a set screw on saidblock binding the other cam. d 16. The comlination ruin a pair o overlapino` caml rin surrounding the same, a blocllr seated the drum andengaging-one cam ring, and a set screw on the block binding- `the othercani ring. 4

17. The combination of a rotar drum, a rotary platen, a aper fee ingmechanism, two cam rings si e bv side surroundand a clampin deviceoccupying a recess in the printing um and binding said rings.

18. The combination of a pair of overlapping cams, a printing membercarrying the same and having a recess, a block set into said recess, adistance piece between the block and one wall ofthe recess serving tohold the block in engagement with one of the cams, and means carried bythe block for clamping the other cam.

19. The combination with a rotary rinting drum of a pair of membersmounts side by side thereon, a block formed to en age one member, a setscrew carried by the b ook formed to clamp the other member, and adistance piece adapted to hold the block in engagement with the memberfirst men t-ioned, said distance piece being itself held in place bysaid set screw.

20. The combination with a rotary printing drum of two cam ringsthereon, one .of them' having a notch, a block occu ying the notch, andmeans carried by the block clamping the other ring.

for l the other, a roller caru printing 21. The combination with arotary print-I y ing drum of two cam rings thereon, one ofl them havinga notch, a block occupying the notch, and a set screw screwing into theblockand serving to clam the otherring.

in testimony whereof, 1P signature in the presence of two witnesses.

HARRY o. GAMMETER.

Witnesses:

' ALBERT H. Barns,

BRENNAN B. Wns'r.

Copies of 'this patent may be obtained for ve cents each, by addressingthe "Commissioner o! Patents.

Washington, ZD. C.

hereunto aiix 'my i

